本文實例講述了JS實現帶關閉功能的阿里媽媽網站頂部滑出banner工具條代碼。分享給大家供大家參考。具體如下：
這是一款阿里媽媽網站頂部banner代碼，采用滑出的方式，一個經典的工具條代碼，可以當作菜單來用，同時還有完善的功能，可以適時關閉工具條，整體效果設計美觀，簡潔漂亮。
運行效果截圖如下：
在線演示地址如下：
http://demo.VeVB.COm/js/2015/js-top-float-banner-alimama-style-codes/
具體代碼如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>阿里媽媽網站頂部banner代碼</title><style>body{margin:0px;padding:0px}.home_tx {PADDING-RIGHT: 0px; PADDING-LEFT: 0px; BACKGROUND: url(images/hometx_03.gif); PADDING-BOTTOM: 0px; MARGIN: auto; OVERFLOW: hidden; WIDTH: 950px; PADDING-TOP: 0px}.home_tx IMG {BORDER-TOP-WIDTH: 0px; PADDING-RIGHT: 0px; PADDING-LEFT: 0px; BORDER-LEFT-WIDTH: 0px; BORDER-BOTTOM-WIDTH: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px; BORDER-RIGHT-WIDTH: 0px}.home_tx DL {PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FLOAT: left; PADDING-BOTTOM: 0px; MARGIN: 0px 10px 0px 0px; WIDTH: 61px; PADDING-TOP: 0px; HEIGHT: 37px}.home_tx SPAN {PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; FLOAT: left; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 830px; COLOR: #333333; LINE-HEIGHT: 34px; PADDING-TOP: 0px; HEIGHT: 37px; TEXT-ALIGN: left}.home_tx SPAN B {PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-WEIGHT: normal; FLOAT: left; PADDING-BOTTOM: 0px; MARGIN: 0px; COLOR: #990000; PADDING-TOP: 0px}.home_tx A {PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FLOAT: right; PADDING-BOTTOM: 0px; MARGIN: 0px; WIDTH: 35px; PADDING-TOP: 0px; HEIGHT: 37px}</style></head><body><DIV id=home_tx style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: auto; OVERFLOW: hidden; WIDTH: 950px; PADDING-TOP: 0px; POSITION: relative; HEIGHT: 1px"><DIV class=home_tx id=home_tx_in style="POSITION: absolute; TOP: -37px; HEIGHT: 37px" align=center><DL><IMG src="images/hometx_01.gif"></DL><SPAN><B>武林網提供asp、php、asp.net、javascript、jquery、vbscript、dos批處理、網頁制作、網絡編程、網站建設等編程資料。</B> <A style="FLOAT: none" href="#" target=_blank>詳情>></A></SPAN> <A style="CURSOR: pointer" onfocus=this.blur() onClick="home_tx_hide();return false;" href="#"><IMG src="images/hometx_04.gif"></A> </DIV></DIV><script>var is_home_tx_show = false;var div_home_tx = document.getElementById("home_tx");var div_home_tx_in = document.getElementById("home_tx_in");var stepms = 10;function home_tx_show(){ home_tx_stepshow();}function home_tx_stepshow(){ var curHeight = parseInt(div_home_tx.offsetHeight); if(curHeight>=37){ is_home_tx_show = true; }else{ div_home_tx.style.height = (curHeight + 4) + "px"; div_home_tx_in.style.top = (parseInt(div_home_tx_in.style.top)+4)+"px"; window.setTimeout(home_tx_stepshow,30); }}function home_tx_hide(){ if(is_home_tx_show){ home_tx_stephide() }else{ window.setTimeout(home_tx_stephide,1200); }}function home_tx_stephide(){ var curHeight = parseInt(div_home_tx.style.height); if(curHeight<=0){ is_home_tx_show = false; }else{ try{ div_home_tx.style.height = (curHeight - 4) + "px"; div_home_tx_in.style.top = (parseInt(div_home_tx_in.style.top)-4)+"px"; window.setTimeout(home_tx_stephide,30); } catch(e) {} }}if(window.addEventListener){ window.addEventListener("load",home_tx_show,false);}else{ window.attachEvent("onload",home_tx_show);}</script></body></html>希望本文所述對大家的JavaScript程序設計有所幫助。
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